<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>加载中...</title>
    <style>
        body {
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            margin: 0;
            background-color: transparent;
        }

        .loading-dots {
            font-size: 28px;
            color: #333;
        }

        .dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            margin: 0 3px;
            background-color: #999;
            border-radius: 50%;
            animation: dot-animation 1.5s infinite linear;
        }

        .dot:nth-child(1) { animation-delay: -0.3s; }
        .dot:nth-child(2) { animation-delay: -0.15s; }
        .dot:nth-child(3) { animation-delay: 0s; }

        @keyframes dot-animation {
            0%, 100% { transform: scale(0.8); opacity: 0.6; }
            50% { transform: scale(1.2); opacity: 1; }
        }
    </style>
</head>
<body>
<div class="loading-dots">
    <span class="dot"></span>
    <span class="dot"></span>
    <span class="dot"></span>
</div>
</body>
</html>